Oscar-winning screenwriter (Chinatown) Robert Towne, like Jack Nicholson, got his start working for B-movie mogul Roger Corman. In this 1961 monster movie, he plays Sparks Moran (under the pseudonym Edward Wain), a lawman who infiltrates the gang of Renzo Capetto (Antony Carbone), a Mafioso planning to smuggle a fortune from Cuba. Once out at sea, however, Capetto intends to kill the ship’s crew and blame their deaths on a mythical sea monster. Little does he know that the actual creature will make his plan all too easy to accomplish.